Measuring-pump.



a. w. McCOY '&w. H; CHAPMAN.

' MEASURING PUMP.

APFLICATION FILED DEC. 7. 1914.

4 shins-sun} 2.

Patented Dec. 26,1916.

2 Wm M alumna/tout HQW. McCOY & w-. H. CHAPMAN.

MEASURING PUMP. APPLICATION FILED DEC- 7| 1914.

Patented Dec. 26,1916.

4 SHEETS-SHEET 3.

- pug .93? 6/ g 93 23 I T v. 1 is H. W. McCOY & W. H. CHAPMAN.

' MEASURING PUMP.

- APPLICATjON FILED DEC. 7. I914. I 1,210,183. r v Patented Dec.- 26,1916.

4 SHEETS-SHEET 4.

UNITED STATES PATENT onnron.

HERBERT w. McCOY AND WILLIAM H. cnnrnan, or rEnKsxIL'L, new YORK.

MEASURING-PUMP.

To all whom it may concern:

Be it known that we, HERBERT W. MoCoY and WILLIAM H. CHAPMAN, citizens of the United States, and both residing at Peekskill, in the State of New York, have invented certain new and useful Improvements in Measuring-Pumps; and we do hereby declare-the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improved apparatus whereby a predetermined volume of oil, gasolene or other liquid may be measured and delivered at a single operation,-andwhereby this volume may be varied at will by simple adjustments of the machine. p

The invention has more particular reference, in its preferred form to a complete coin-controlled apparatus capable of delivering a certain quantity of liquid in return for each coin deposited in the machine, while permitting adjustment from time to time to vary the amount deliveredat each operation, in conformity with price fluctuations. By use of this improvement, therefore, a volume of liquid having a given fixed value may always be delivered, on use of a single coin of that value; adjustments not available to the public being made when changes of price occur.

The improved apparatus in question is simple, reliable and relatively inexpensive.

A further advantage which it possesses lies in the fact that it conforms in its general structural type to standard pumps already in wide use.

While the present invention is not confined in scope to the details hereinafter described, a preferred embodiment is shown in the accompanying drawings wherein- Figure 1 is a side elevation of the device with the main or delivery door open, Fig.

-2 is a similar view from the opposite side,

and with a portionof the outer casingremoved, Fig. 3 is a plan view' with the top of the casing removed, Fig. 4: is a partialsectionalview on the plane a l-=4 of Fig, 2, as seen looking upward, Figs. 5 and 6 are perspectiveviews of details of the coin handling elements, Fig. 7 shows the principal operating parts on a large scale'as viewed in section on theplane 7,---'( in 3, and

m Specification of Letters Patent.

Application filedDecember 7, 1914. Serial No. 875,730.

' Fig. 8 shows the clutch in vertical section,

working cylinder being shown partly in elevation and partly-in median vertical section, and Figs. 11 and 12 show certain details of the preferred indicator.

The preferred outer sheet metal casing 10 is preferably divided by a vertical partition 11, on one side of which are placed the working parts, and on the opposite side of which the delivery of liquid takes place, for instance through the flexible hose 12. This latter compartment is accessible to .the public through the door 13, which may he slid downward as shown in Fig. 1, by the hantile 14.

The oil or other liquid to be delivered is contained in a cylinder 15 near the bottom of the casing 1.0, which cylinder is supplied through a pipe 16. The piston 17 slides within this cylinder, being actuated by the piston rod 18 carrying at its upper end the rack 19. When the piston 17 rises, the oil above it is forced upward through the delivery pipe 20 to the hose 12, in a well known manner; while at the same time, a new supply of oil enters below the piston.

The upward opening automatic valve 21 on the piston permits downward movement thereof on the return stroke, in a well known manner.

The operation or lifting the piston for the above purpose is primarily accomplished by means of the operating shaft 22, turned by means of the handle or crank 23, or by any suitable means. Upon the shaft 22 is loosely mounted the spur gear 24,- meshing.

with the rack 19, and having horizontally projecting beveled teeth 25 at one end, whereby said gear is made the stationary member of a clutch. The movable member clutch members apart. The sleeve 26 is furnished with an annular cove 29 engaged in a well known manner y the ends of the} fork 30 which is pivotally mounted at 31..

.A pawl 32 andratchet 33 prevent the shaft ice 22 from beingturned backward. 'lhe ar- 35 nection between the shaft22 and gear 24 having been thus established, further revolu:

row in Fig. 7 shows the direction of operative movement of the crank.

In order to make it possible to raise the piston to deliver the required quantity of oil, and to suitably limit the amount delivered, the following elements are employed: A flexible cordor cable 34 has one 3 end fixed at 35, and is preferably furnished swing backward from full line to dotted line' closed, the lower end of the bar 43' looks it,- as for instance by dropping into the annular with an adjusting turnbuckle 36., The other end of the cable 34 is fastened to an eye 37 bolted to the fork 30. (See Figs. 4 and 8). A swinging frame 38 is pivoted or hinged at 39 on the casing 10, and the cable 34 passes through an opening in the end of the extension or arm 40 carried by said frame. Fixed on the shaft 22 is a hub 41 carrying a beak 42, so placed that, as the shaft '22 revolves, the end of the beak causes the frame .38 to es 44, 45, andpreferably pressed downward by a spring 46, acting upon a suitable shoulder 47 When the clutch 24, 26, is

groove .or channel 29. (See Fig. 8). Contion' of the shaft lifts the piston 17, and delivery of oil through the hosepipe 12 will continue untilthe clutch is unlocked. In the meantime, of course the frame 38 remains in the position shown in dotted lines in Fig. 7, and the beak 42 passes said frame idly, as

the shaft 22 revolves.

The unlocking of he clutchis preferably accomplished by causing the bar 43 to be lifted by a stem 48 forming an upward contmuationof the rack 19 (seeFig.2)'. For

this purpose ahub 49 is carried by the bar 43 and is fixed. thereon in any desired position by a .set'screw 50, or otherwise. This hub carries an arm 51, which extends over a shoulder 52 on the stem 48 best shown in Fig. 10. When the rack 19 moves upward, the shoulder finally acts u on the arm 51 and lifts the bar 43,thus ocking the clutch. The spring 28 then separates the 'clutcli members, discontinuing further movement of the rack and piston. It is clear that, by adjusting the position of the hub 49 on the lock bar 43., the amount of oil delivered in. a

single cycle of operation as above described .can'bepredetermmed. It is to be understood that, when the clutch members separate, the

sleeve 26' acts through the fork-30 and cable (See Fig-.14). In

I 34 to return the swin ng frame 38 to full preparatory to another cycle of operation. a

line position in Fig It is within the scope of the claims hereinafter set forth to accomplish the above cycle of operations without coin control, but for the purpose of preventing re etition of operation of the machine except y insertion of a proper coin, the following further details of construction are employed. As clearly shown in Figs. 4 and 6, the frame 3811s pierced at 53 opposite the beak 42; so that, I as this latter revolves it passes idly through the opening thus afforded. In order to operate the frame 38 as above described, therefore, the opening 53 must be blocked. For this purpose there is placed above the inclined frame 38 a similarly inclined coinchute 54, so placed that a coin dropped into it falls first upon a shoulder 55 on the frame 38, and rebounds therefrom (in a path indicated in dotted lines in Fig. 3) so as to drop between the inclined edges of a fixed coin guiding plate 56, shown best i n Figs. 3, 5 and "10. Normally the frame 38 presses lightly u ward against the inclined under surface of this gulding plate.

From the above it will be seen that, in order to operate the complete device as shown, the coin is first dro'pped intoplace to block the opening 53, being held there by the guiding plate 56. The handle 23 is. then turned, bringing the beak 42 into contact with the coin, by me 'ns of which the frame 38 is ressed backwa away from the plate fiile the coin is held firmly against said frame. This closes the clutch and permits the operation above described. At the same I time, as soon as the beak 42 passes the coin, the coin drops from the frame 38 into an ap-' propriate receptacle 57. (See Fi 10). In consequence, the next time the bea 42 makes a revolution'it asses idly through the open ing 53, and, a ter a single operation of the pump, followed as aforesaid, by unlocking of the clutch, no further action is possible until the opening 53 is closed once more by a coin. It is to be understood that, as soon as the pinion 24 is freed by the opening of the clutch, the rack and is'ton return to their lowest osition by, then own wei ht.

It is pre erred to supply an indlcator whereby the adjustment of the quantity to be delivered by each operation may be gaged. Various means may be employed,

and that shown in the accompanying drawings by way of example is constructed as follows: A narrow vertical slit 58 is made in the artition 11, and on one or both sides thereo toward the door 13, are placed suitable graduations and identifying characters designating. gallons, quarts or other units,

either of volume or value. A fine pointer 59 rejects through the slot 58, and is carrie by an extenslon 60 ofthe arm 51. By

this means the position of the hub on the locking bar is ascertained, with due relation to the quantity to be delivered; In order that the position of the rack and piston may be ascertainable at all times, so that no-operation may be commenced before full return to lowermost position, a. pointer 61 may be fixed toa suit-able part of the rack or its extension, which pointer may project through the slot 58, as shown in Fig. 1. Any suitable door may be provided to give authorized persons access to the working parts behind the partition 11.

Figs. 3 and 10 show a slightly modified arrangement of the pointers herein, instead of projecting through a slit in an opaque graduated plate, they move behind a graduated glass plate. Either arrangement can, of course, be used.

It is preferred to provide means for insuring complete emptying of the hose pipe, where such is used; and for this purpose a valve casin 62 is shown at the top of the discharge pipe 20. As shown in Fig. 9 this casing has a threaded opening 63 to fit upon the pipe 20, over which is a puppet valve 64: opemng upward, and'provided with a cup 65. The branch opening 66 leads'tothe hose pipe. The top of the casing 62 is "closed by a second puppet valve 67, opening downward and also provided with a cup 68 fitting lnto the cup 65. A spring 69, within the cups supports the valve 67 and, when the valve 64: is closed this spring either barely holds the valve 67 closed or allows it to remain slightly open, so that the air is allowed to enter over any liquid left in the hose pipe after the valve 64 has closed. On the other hand, when the liquid is forced out b the pump, the valve 64 opens upward and mly closes the valve67.

What is claimed is- 1. In a measuring pump a cylinder, a piston movable therein, a piston rod thereon carrying an abutment, actuating means for said rod and piston, connecting means adapted to. establish operative relation between said actuating means and said piston, a locking device adapted to hold said connecting means in its operative positiomand means located in the path of movement of said abutment on the iston rod andunechanically connected wlth said locking device, said last named means being adapted, when moved by said abutment, to unlock said connectin means when said piston reaches a. pre etermined position in said cylinder.

' 2. In a measuring pump, a liquid expelling means, a revoluble shaft, a driving pimon, for the expelling means, normall loose on the shaft, a clutch on said she adapted to connect the same with said pinion, means operated movement of the shaft for. engaging'sa clutch, a lock for the clutch, an adjustable automatic means for producin a direct mechanical connection at a pre etermined position of said expelling device between said expelling device and said lock, to unlock said clutch.

3. Ina measuringpump, a liquid expel ling means, a revoluble shaft, a driving pinion-for the expelling means, normally loose on the shaft, a clutch on said shaft adapted to connect the same with said pinion, a swinging frame operatively connected with said clutch for engaging the same, a meniber on the shaft adapted to swing said frame, a lock for said clutch, and means mechanically connected with said expelling means for operating said lock to free said clutch, substantially as described.

4. In a measuring pump, a liquid expelling means, a revoluble shaft, :1 driving pinion for the expelling means normally loose on the shaft, a clutch on said shaft adapted to connect the same with said pinion, a swinging frame operatively connected with said clutch for engaging thesame, a member on the shaft adapted to swing said frame, a lock for the clutch and automatic means operated by movement of the expelling means for unlockingisaid clutch, substantially as described.

5. In a measuring pump a liquid expelling means, a revoluble shaf to connect the same with 'said pinion, a shifting lever for the clutch, a cable having one end fixed and the other attached to said 7 piston for expelling liquid, a stem moving therewith, actuating means for said piston, connecting means adapted to establish operative relation between said actuatln means and piston, a locking bar for sea connecting-means, and members on sald bar and stem adapted to come in contact to hit the bar when the stem has made a predetermined movement, substantially as described.

-7. In a measuring pump, a reciprocating piston for expelling liquid, a stem moving therewith, actuating means for said p1ston, connecting means adapted to establlsh 0p-' .erative relation between said actuating means and piston, a locking bar for'said connecting means, and members on said bar and stem adapted to come in contact to lift the bar when the stem has 'madea predetermined movement, one of said members being adjustable upon its support, substan-" tially as described. 8. In a measuring pump, a reciprocating piston for ex elling liquid, a revoluble shaft, a pinion oose thereon, a rack meshing a driving pinion for the expelling means normally loose I on the shaft, a clutch on said shaft adapted therewith and attached to said piston, a clutch on said shaft for engaging said inion, a lock bar for said clutch and mem ers on said rack and lock bar adapted to come in contact to lift said bar, substantially as described. I

9. In a measuring pump, a reciprocating piston for expelling liquid, a revoluble shaft, a pinion loose thereon, a rack meshing therewith and attached to said piston, a clutch on said shaft for engaging said pinion, a lock bar for said clutch and mem-, bers on said rack and lock bar adapted to come in contact to lift said bar, one of said members being adjustable upon its support, substantially as described. I 10. In a measuring pump, a reciprocating piston for expelling liquid, a revoluble shaft, a'pinion loose thereon, a rack meshing therewith and attached to said piston, a clutch on said shaft forengaging said pinion, a lock bar for said clutch, an adjustable arm on said lock bar and means on said rack adapted to make contact with said arm to lift said bar, substantially as described.

11. In a measuring pump, a liquid expelling means, actuating means therefor, a connecting device between the expelling means and the actuating means, a locking bar for said devlce, automatlc means for lifting the bar including an arm adjustably supported by said bar, and an indicator comprising a p ate and apointer fixed to said arm and adapted to move along said plate,

substantially as described.

12. In a measuring pump, a rack, a. liquid expelling piston thereon, a revoluble shaft, a pinion thereon meshing with said rack, a

clutch on said shaft for engaging said pin- 40 ion and having a recess, a slidably mounted lock bar adapted to engage said recess when the clutch is closed, and means automatically operated by movement of said rack for lifting said lock bar out of said recess, substantially as described. 13. In a measuring pump a reciprocating liquid expelling piston and rod, actuatin means therefor, connecting means adapts to establish operative relation between said actuating means and said piston rod, a locking bar parallel to said piston 'rod adapted to hold said connecting means in operating position, adjustable means on the locking bar operated by movement of the piston rod for actuating the locking device to unlock the connecting means, an indicator plate arallel to said piston rod, a. pointer for said indicator carried by said piston rod and a second pointer carried by the adjustable'unlocking means. 7 14. In a measuring pump, an oil cylinder, a piston within it, a vertical piston rod having a'rack, a horizontal operating shaft, a v pinion loosely mounted thereon meshing with said shaft, a clutch for connecting and disconnecting said pinion with relation to i the shaft, means for preventing reverse movements of the shaft, a vertical locking bar for said clutch, and means for establishing mechanical connection between said locking bar and piston rod for unlocking said clutch; said piston, piston rod and rack being adapted to return to their lowermost position by their own weight.

15. In measuring pump, an oil cylinder, a piston within it, a piston rod, a revoluble shaft, operative connecting means including a clutch, between said shaft and piston rod, a locking bar for said clutch, a member movable along said bar adapted to receive p ressure from said piston rod to unlock the clutch, an index, and a pointer connected 'With said member on the bar and moving along said index to indicate theposition of said member.

In testimony whereof, we affix our signatures, in presence of two witnesses.

HERBERT W. MCCOY.

WILLIAM H. CHAPMAN.

Witnesses:

FRANK UNDERWOOD, FRA K HUBBELL CHAPMAN. 

